Mining-machine.



W. SELTNEB.

' MINING MACHINE.

No. 678,045. Patented July 9, I90l.

(App1i cation filed Oct. 15, 1900.)-

(No Model.) 2 sheets-sheet 4 [AWE/Wok m: NOIBB trans m. WYHQ. WASHINGTON. n, c.

UNITED STATES PATENT OFFICE.

WILHELM SELTNER, OF SCHL'AN, AUSTRIA-HUNGARY.

MINING-MACHINE.

SPECIFICATION forming part of Letters PatentNo. 678,045, dated J My 9," 1901. Application filed October 15, 1900. Serial No. 33,168. (No model.)

To all whom it may concern.-

Be it known that I, WILHELM SELTNER, engineer, a subject of the Emperor of Austria- Hungary, and a resident of Schlan, Bohemia, in the Empire of Austria-Hun ary, have invented certain new and useful fmprovements in Mining-Machines, of which the following is a specification.

My invention relates to an improved miningmachine for channeling overhead the material on which it is adapted to operate.

Myimprovement comprises a movable plat-- form, a telescoping cylinder, a telescoping ro- .provided with a cutter-head for excavating vertical channels. Fig. 1 is a rear elevation thereof. .Fig. 1 is a detail horizontal section of a drift, showing the elliptical form of connected channels excavated by the cutter-' head. Fig. 2 is a side elevation of my mining-machine provided with another form of' cutter-head for excavating vertical channels. Fig. 2 is a detail horizontal section of a drift, showing the circular form of connected channels excavated'by this cutter-head. Fig. 3 is a side elevation of my mining-machine provided with another form of cutter-head for excavating vertical channels. Fig. 3 is a detail horizontal section of a drift, showing the rectangular form of connected channels excavated by this cutter-head. Fig. 4 is a side elevation of my mining-machine provided with still another form of cutter-head for excavating vertical channels. Fig. 4. is

a detail horizontal section of a drift, showing the square form of connected channels excavated by this cutter-head. Fig. 5 is a vertical transverse section of the mining-machine having the form of cutter-head shown in Fig. 1,

the cutter-head being raised. Fig. 6 is a similar view showing the cutter-head lowered. Fig. 7 is aside elevation of my mining-machine provided with a cutter-head for cutting overhead longitudinal channels. I i

S is a drift a distance underground, and F is a layer thereof to be excavated.

H is a sloping lode, and L is a horizontal 6o lode. 1

My machine is mounted on a movableplatform W, adapted to travel through the shift S.

g g g are sections of a telescoping cylinder, the lower cylinder-section gand .intermediate cylinder-section 9' being provided with internal screw-threads and the intermediate cylinder-sections g and'upper cylinder-section g with external screw-threads, meshed by the internal screw-threads. V The .70 lower cylinder-sectiong is further provided with a-worm-wheel g meshed by a worm g i whereby the cylinder is rotated to project and retract the intermediate cylinder: sec= tions on the lower cylinder-section andthe upper cylinder-section on the intermediate cylinder-section. Within the cylinder and supported thereon is located a telescoping pole or rod'having sections ff f, the lower pole or rod section f extending beneath the lower cylinder-section, where it is provided with a bevel gear-wheel f meshed by a bevel-pinion f, mounted on a shaft f carrying a gearwheel m meshed by a pinion m on a driving-shaft m, driven from a motor M. Surrounding the cylinder-section is at protecting telescoping casing having sections it h if, the lower casing-section h being stationary and the intermediate casing-section h and upper casing-section h being supported on the cylinder and adjustable therewith.

o is a bevelpinion fixed to the projecting upper end of the upper pole-section f and d is a bearing for inclined bevel gear-wheels .a, meshed by the bevel-pinion c and provided 5 In Figs. 3 and 3 I have shown a cylindrical cutter-head comprising a double central disk (1?, having cutters b and single end disks a having cutters b and mounted on an upper shaft 61, carrying pulleys 1', connected with pulleys k on a lower shaft is by a band 10 The lower shaft 70 carries a bevel gear-wheel 70 meshed by a bevel gear-wheel 70 fixed to the upper pole-section f This cutter-head excavates rectangular channels 3 In Figs. 4 and 4* I show a similar construction of cutter-head and gearing, with the exception of substituting for the double central disk a having cutters b, a single disk a having cutters (2 whereby channels 3 approximately square in cross-section, are produced.

In Fig. 7 I have shown the machine in normal condition and moved along, so as to produce a longitudinal overhead channel.

On rotating the lower cylinder-section g in one direction by manual or motor power the first intermediate cylinder-section g is projected upwardly, and then the next intermediate cylinder-section is projected on the latter, which in turn projects the cylinder-section thereabove. This action projects the telescoping pole or rod carrying the cutterhead and at the same time projects the protecting telescoping casing-sections. The cut ting of a vertical channel being completed, the parts are retracted to normal position and the machine advanced, when the operation can be repeated and another vertical channel out along the first channel produced. Channels are thus excavated closely adjoining one another. By this method of Working the whole depth of the layer is passed through at once by the cutting-head,- it being at the same time impossible that those parts of the machinery which are inside of the opening thus gained will be pressed or pushed upon mp4s by the pressure of the rock, because the out ting-tools on being withdrawn must again touch the whole opening they have created and are able to free themselves by cutting their way.

The machine may the operated in inclined position, as shown in Fig. 5.

The pole is rotated independently of the cylinder at the desired height, the sections of the pole being connected so as to turn together.

Having thus described my invention, the following is what Iclaim as new therein and desire to secure by Letters Patent:

1. Aminingnnachine comprisingamovahle platform, a telescoping cylinder, a telescoping rotatable pole or rod, carried by the telescoping cylinder, a cutter-head carried by the pole or rod and geared thereto, means for rotating the telescoping cylinder for project'- ing and retracting the pole or rod with the cutter-head, and means for rotating the pole or rod to operate the cutter-head.

2. Amining-machinecomprisingamovable platform, a telescoping cylinder, a telescoping rotatable pole or rod, carried by the tele= scoping cylinder, a cutter-head carried by the pole or rod and geared thereto, a telescoping protecting-casing carried by the telescoping cylinder, means for rotating the telescoping cylinder for projecting and retracting the pole or rod with the cutter-head and casing, and means for rotating the pole or red to operate the cutter-head.

In witness whereof I subscribe my signa= ture in presence of two witnesses.

\VILHELM SELTNER.

NVitnesses:

TRUNTISCH SURA, JAN SUVA. 

